PMID- 24112788 OWN - NLM STAT- MEDLINE DCOM- 20140929 LR - 20220309 IS - 1558-1497 (Electronic) IS - 0197-4580 (Linking) VI - 35 IP - 4 DP - 2014 Apr TI - Increased pro-nerve growth factor and decreased brain-derived neurotrophic factor in non-Alzheimer's disease tauopathies. PG - 926-33 LID - S0197-4580(13)00374-6 [pii] LID - 10.1016/j.neurobiolaging.2013.08.029 [doi] AB - Alterations in the expression and signaling of brain-derived neurotrophic factor (BDNF) and the precursor to nerve growth factor (NGF), proNGF, play a role in the neuronal and cognitive dysfunction of Alzheimer's disease. Aggregated amyloid-beta has been shown to down-regulate specific BDNF transcripts in Alzheimer's disease, but the role of tau pathology in neurotrophin dysregulation has not been investigated. We measured levels of BDNF mRNA and protein using real-time quantitative reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay and proNGF protein using Western blotting in parietal cortex of subjects with tauopathies, neurodegenerative diseases exhibiting tau pathology without amyloid-beta accumulation. We observed a significant increase in the level of proNGF protein in Pick's disease and a significant decrease in BDNF mRNA and protein levels in Pick's disease and corticobasal degeneration, but no neurotrophin alterations in progressive supranuclear palsy. The decrease in total BDNF mRNA levels in these tauopathies was predominantly due to down-regulation of transcript IV. These findings implicate tau pathology in neurotrophin dysregulation, which may represent a mechanism through which tau confers toxicity in Alzheimer's disease and related non-Alzheimer's dementias. CI - Copyright (c) 2014 Elsevier Inc. All rights reserved. FAU - Belrose, Jillian C AU - Belrose JC AD - Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada. FAU - Masoudi, Raheleh AU - Masoudi R AD - Department of Biology, McMaster University, Hamilton, Ontario, Canada. FAU - Michalski, Bernadeta AU - Michalski B AD - Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada. FAU - Fahnestock, Margaret AU - Fahnestock M AD - Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada; Department of Biology, McMaster University, Hamilton, Ontario, Canada. Electronic address: fahnest@mcmaster.ca. LA - eng GR - MOP-64382/Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131008 PL - United States TA - Neurobiol Aging JT - Neurobiology of aging JID - 8100437 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (RNA, Messenger) RN - 0 (tau Proteins) RN - 9061-61-4 (Nerve Growth Factor) SB - IM MH - Aged MH - Aged, 80 and over MH - Alzheimer Disease/genetics/metabolism MH - Brain-Derived Neurotrophic Factor/*genetics/*metabolism MH - Down-Regulation MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - *Gene Expression MH - Humans MH - Male MH - Middle Aged MH - Nerve Growth Factor/*genetics/*metabolism MH - Pick Disease of the Brain/genetics/metabolism MH - RNA, Messenger/metabolism MH - Reverse Transcriptase Polymerase Chain Reaction MH - Tauopathies/*genetics/*metabolism MH - tau Proteins/*metabolism/*toxicity OTO - NOTNLM OT - Alzheimer's disease OT - Brain-derived neurotrophic factor OT - Corticobasal degeneration OT - Nerve growth factor OT - Neurotrophin OT - Pick's disease OT - Post mortem brain OT - Progressive supranuclear palsy OT - Tau OT - Tauopathy EDAT- 2013/10/12 06:00 MHDA- 2014/09/30 06:00 CRDT- 2013/10/12 06:00 PHST- 2013/01/26 00:00 [received] PHST- 2013/08/23 00:00 [revised] PHST- 2013/08/23 00:00 [accepted] PHST- 2013/10/12 06:00 [entrez] PHST- 2013/10/12 06:00 [pubmed] PHST- 2014/09/30 06:00 [medline] AID - S0197-4580(13)00374-6 [pii] AID - 10.1016/j.neurobiolaging.2013.08.029 [doi] PST - ppublish SO - Neurobiol Aging. 2014 Apr;35(4):926-33. doi: 10.1016/j.neurobiolaging.2013.08.029. Epub 2013 Oct 8.